When using the calipers, to avoid the chances of getting different measurements it is recommended that they be returned in pairs. First, remove the front wheel lug nuts, then lift the front of the vehicle off the ground and set it on jack stands, engage the parking brake. Take off the wheels and relocate the draining pan underneath the brake assembly, using brake system cleaner to clean up the caliper and area. As for a fixed type front caliper, if replacement is required, then you have to take off the brake pads; but if not, simply slide the brake pads to the side of the caliper to obtain space for clearance. Lift the outboard brake pad, push both pistons into their bores with a brake piston brush, clean the contact surfaces, smears the back of the new brake pad with high temp grease, and install an anti squeal shim. Using a flare nut wrench, remove the brake line from the caliper; keep all the opening covered to avoid the loss of brake fluid and do this very carefully without spilling the brake fluid. Take off the caliper mounting bolts to release and raise the caliper off the knuckle. If on the floating type of rear caliper remove the brake hose banjo bolt and cap the hose to avoid seepage of the oil. Slide or unbolt the mounting bolts of the caliper, then pull up the caliper or off the bracket until the clips on the rubber boot can be lifted in an upward motion; if still connected to the hose, then support with wire. The process of installation again involves reverse of removal and it is followed by tightening the caliper mounting bolts to the required torque. While mounting front calipers, put the brake line and tighten it and for the rear calipers new sealing washer must be placed and tighten the banjo bolt. Finally check the operation of the brakes, bleed the brake system and then replace the wheels and the lug nuts, lower the wheel, tighten the lug nuts ad finally you return the vehicle to normal service.